Here is the full list of all 78 Holy Potatoes! What the Hell?! achievements.
Sort 5000 Sinners in a single playthrough
Complete 1000 Orders in a single playthrough
Send 666 sinners to heaven in a single playthrough
Brew 1000 Baaley's in a single playthrough
Complete 666 Orders in a single playthrough
Brew 666 Baaley's in a single playthrough
Brew 300 Baaley's in a single playthrough
Beat Veggil in the Cook-off!
Beat the "Ultimate Boss" in the Cook-off!
Send 300 sinners to heaven in a single playthrough
Sort 3000 Sinners in a single playthrough
Brew 100 Baaley's in a single playthrough
Cook 1000 Dishes in a single playthrough
Brew 13 Baaley's in a single playthrough
Unlock 50 Recipes in a single playthrough
Advance to Circle of Treachery!
Beat St. Reaper in the Cook-off!
Obtain at least 25 score for Lunch Cook-off!
Get Osiris to visit your restaurant!
Sort 2000 Sinners in a single playthrough
Unlock 40 Recipes in a single playthrough
Advance to Circle of Violence!
Beat Mealeficent in the Cook-off!
Obtain at least 50 total score for both Lunch and Dinner Cook-off!
Obtain at least 25 score for Dinner Cook-off!
Cook 666 Dishes in a single playthrough
Get Nephthys to visit your restaurant!
Get Odin to visit your restaurant!
Get Hades to visit your restaurant!
Send 100 sinners to heaven in a single playthrough
Complete 300 Orders in a single playthrough
Get Anubis to visit your restaurant!
Get Izanagi-no-Mikoto to visit your restaurant!
Spend 20000 $tarch
Advance to Circle of Fraudery!
Get Kuk to visit your restaurant!
Beat Dantee in the Cook-off!
Sort 1000 Sinners in a single playthrough
Get Tengu to visit your restaurant!
Send 50 sinners to heaven in a single playthrough
Get Nyx to visit your restaurant!
Get Hela to visit your restaurant!
Spend 10000 $tarch
Advance to Circle of Heresy!
Beat Hellatrix in the Cook-off!
Cook 300 Dishes in a single playthrough
Spend 5000 $tarch
Spend 2500 $tarch
Unlock 30 Recipes in a single playthrough
Sort 666 Sinners in a single playthrough
Get Oni to visit your restaurant!
Advance to Circle of Anger!
Beat Tarth Tater in the Cook-off!
Send 13 sinners to heaven in a single playthrough
Complete 100 Orders in a single playthrough
Get Persephone to visit your restaurant!
Get Freya to visit your restaurant!
Brew 5 Baaley's in a single playthrough
Spend 1000 $tarch
Send 5 sinners to heaven in a single playthrough
Get Izanami-no-Mikoto to visit your restaurant!
Spend 666 $tarch
Advance to Circle of Greed!
Cook 100 Dishes in a single playthrough
Sort 300 Sinners in a single playthrough
Complete 50 Orders in a single playthrough
Unlock 20 Recipes in a single playthrough
Advance to Circle of Gluttony!
Cook 50 Dishes in a single playthrough
Unlock 15 Recipes in a single playthrough
Get Thanatos to visit your restaurant!
Advance to Circle of Lust!
Sort 100 Sinners in a single playthrough
Complete 13 Orders in a single playthrough
Cook 13 Dishes in a single playthrough
Sort 13 Sinners in a single playthrough
Get Loki to visit your restaurant!
Get to Limbo!